Police are appealing for witnesses following a robbery on Sydney’s North Shore.

About 12.35am today (Sunday 9 October 2011), a man entered a shop in Hampden Road, Artarmon and threatened an attendant with a gun.

The man ran off with a sum of money and the shop attendant was not physically injured.

Police from North Shore Local Area Command attended the scene and are investigating the matter.

They would like to speak to a man who may be able to assist their investigation.

The man is described as being of Mediterranean/Middle Eastern appearance with a medium build, dark facial hair and was wearing a black beanie, a long-sleeved white top, blue jeans and white runners.